slideshow: Move Vortex calculations to the geometry stage, fixes Intel

Their Windows driver was failing due to too many varyings being used
between the vertex and the geometry stages.

Change-Id: Iec69a2ef29e6ed4ba5ce6e46c7a5eb7db5098d1b
Reviewed-on: https://gerrit.libreoffice.org/22469
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

1 files changed, 0 insertions, 14 deletions

diff --git a/slideshow/opengl/vortexVertexShader.glsl b/slideshow/opengl/vortexVertexShader.glsl
index 9bab2d9e0397..3d5838e5b9b3 100644
--- a/slideshow/opengl/vortexVertexShader.glsl
+++ b/slideshow/opengl/vortexVertexShader.glsl
@@ -16,7 +16,6 @@ in vec3 a_normal;
 in vec2 a_texCoord;
 in float tileInfo;
 
-uniform mat4 u_projectionMatrix;
 uniform mat4 u_modelViewMatrix;
 uniform mat4 u_sceneTransformMatrix;
 uniform mat4 u_primitiveTransformMatrix;
@@ -26,15 +25,10 @@ uniform float time;
 uniform ivec2 numTiles;
 uniform sampler2D permTexture;
 uniform float slide;
-uniform float shadow;
-uniform mat4 orthoProjectionMatrix;
-uniform mat4 orthoViewMatrix;
 
 out vec2 g_texturePosition;
 out vec3 g_normal;
-out mat4 projectionMatrix;
 out mat4 modelViewMatrix;
-out mat4 shadowMatrix;
 out mat4 transform;
 out float nTime;
 out float startTime;
@@ -142,14 +136,6 @@ void main( void )
                   * transform;
     }
 
-    if (shadow < 0.5) {
-        projectionMatrix = u_projectionMatrix;
-        shadowMatrix = orthoProjectionMatrix * orthoViewMatrix;
-    } else {
-        projectionMatrix = orthoProjectionMatrix * orthoViewMatrix;
-        shadowMatrix = mat4(0.0);
-    }
-
     modelViewMatrix = u_modelViewMatrix * u_operationsTransformMatrix * u_sceneTransformMatrix * u_primitiveTransformMatrix;
     gl_Position = vec4(a_position, 1.0);